TYPO3 Core

I think I can close this issue,as it does not seem to affect the latest TYPO3 versions:

I performed the following test on TYPO3 7.6.21 with Fluid Styled Content

Initial setup: default language:ITA, language with ID=1: ENG

1. create a page "Test66957" (ID=41)
2. translate it "Test66957 ENG"
3. "Test66957" > create content (CType: Header, header "TEST")
3.1 the content element "TEST" has ID=63
4. Translate it (Mode: Translate) >
4.1 the content element "[Translate to English:] TEST" has ID=64
5. "Test66957" > create content (CType: Special Menu, header "Section menu", Menu Type:"Section Index"; Selected pages: the page itself)
5.1 the content element "Section menu" has ID=65
6. Translate it again
6.1 the content element "[Translate to English:] Section menu" has ID=66

Result:¶

in default language (L=0) the section menu has 2 links:

index.php?id=41&L=0#c65
index.php?id=41&L=0#c63

In ENG (L=1) the section menu has 2 links:

index.php?id=41&L=1#c66
index.php?id=41&L=1#c64

I repeated the same test with "Copy" instead of "Translate" mode and the result is the same.
I repeated both tests using CSS Styled content and the result is the same

Verdict:¶

Works as expected.

I also repeated the same test on TYPO3 9.0.0-dev (latest master), only with Fluid Styled Content and I obtained the same result.

If you think that this is the wrong decision or that a different test should be performed, please reopen it or open a new issue with a reference to this one. Thank you.